{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,9]],"date-time":"2026-07-09T11:21:33Z","timestamp":1783596093652,"version":"3.55.0"},"reference-count":18,"publisher":"World Scientific Pub Co Pte Lt","issue":"04","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Parallel Process. Lett."],"published-print":{"date-parts":[[2016,12]]},"abstract":"<jats:p> Large numerical weather prediction (NWP) codes such as the Weather Research and Forecast (WRF) model and the NOAA Nonhydrostatic Multiscale Model (NMM-B) port easily to Intel's Many Integrated Core (MIC) architecture. But for NWP to significantly realize MIC\u2019s one- to two-TFLOP\/s peak computational power, we must expose and exploit thread and fine-grained (vector) parallelism while overcoming memory system bottlenecks that starve oating-point performance. We report on our work to improve the Rapid Radiative Transfer Model (RRTMG), responsible for 10-20 percent of total NMM-B run time. We isolated a standalone RRTMG benchmark code and workload from NMM-B and then analyzed performance using hardware performance counters and scaling studies. We restructured the code to improve vectorization, thread parallelism, locality, and thread contention. The restructured code ran three times faster than the original on MIC and, also importantly, 1.3x faster than the original on the host Xeon Sandybridge. <\/jats:p>","DOI":"10.1142\/s0129626416500195","type":"journal-article","created":{"date-parts":[[2016,12,21]],"date-time":"2016-12-21T04:51:42Z","timestamp":1482295902000},"page":"1650019","source":"Crossref","is-referenced-by-count":9,"title":["Optimizing Weather Model Radiative Transfer Physics for Intel\u2019s Many Integrated Core (MIC) Architecture"],"prefix":"10.1142","volume":"26","author":[{"given":"John","family":"Michalakes","sequence":"first","affiliation":[{"name":"Environmental Modeling Center, NOAA\/National Centers for Environmental Prediction, College Park, Maryland 20740, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael J.","family":"Iacono","sequence":"additional","affiliation":[{"name":"Atmospheric and Environmental Research, Lexington, Massachusetts, 02421, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Elizabeth R.","family":"Jessup","sequence":"additional","affiliation":[{"name":"Department of Computer Science, University of Colorado, Boulder, Colorado 80309, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"219","published-online":{"date-parts":[[2016,12,21]]},"reference":[{"key":"p_3","doi-asserted-by":"publisher","DOI":"10.1109\/JSTARS.2012.2188780"},{"key":"p_6","doi-asserted-by":"publisher","DOI":"10.1142\/S0129626408003557"},{"key":"p_7","first-page":"156","author":"Iacono M. 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